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Find Addition to existing structure builders in Danville

North Point Construction and Restoration, Inc.

5114 Port Chicago Hwy B
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

North Point Construction and Restoration, Inc.

5114 Port Chicago Hwy B
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
8 years of experience
Free onsite estimate

At North Point Construction and Restoration, Inc., we pride our company on reliability, great communication, integrity, and quality work that customers can believe in. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business and working with you! 20 years of experience.

At North Point Construction and Restoration, Inc., we pride our company on reliability, great communication, integrity, and quality work that customers can believe in. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business and working with you! 20 years of experience.

Avatar for Fixit Construction, Inc.

Fixit Construction, Inc.

184 Bowling Green Street
3.00(
1
)
•Approved Pro

Fixit Construction, Inc.

184 Bowling Green Street
3.00(
1
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"They were professional and completed the project on time."

Elizabete T on September 2016

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"They were professional and completed the project on time."

Elizabete T on September 2016

Avatar for UNITED C CONSTRUCTION, INC

UNITED C CONSTRUCTION, INC

1900 Powell Street Suite 700
5.00(
3
)
•Approved Pro

UNITED C CONSTRUCTION, INC

1900 Powell Street Suite 700
5.00(
3
)
•Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 2024

Avatar for Atlantis Remodeling

Atlantis Remodeling

2010 El Camino Real
5.00(
5
)
•Approved Pro

Atlantis Remodeling

2010 El Camino Real
5.00(
5
)
•Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

Atlantis is a boutique business that prioritizes delivering superior customer service. We believe in going above and beyond to ensure our clients receive nothing short of exceptional treatment. Joel takes great pride in providing personalized attention to every customer. At Atlantis, we consider each client a valuable part of our exclusive clientele. Join us and experience premium service that exceeds expectations.

"We build an 400 sqft addition to our living room and made some change to the layout of our home as well , In summary, working with Joel and Avi was a great experience all around. The communication was excellent, the job was done quickly and cleanly, and the end result is absolutely fantastic. I would highly recommend them to anyone in need of home renovation and construction work."

Eric S on July 2023

Atlantis is a boutique business that prioritizes delivering superior customer service. We believe in going above and beyond to ensure our clients receive nothing short of exceptional treatment. Joel takes great pride in providing personalized attention to every customer. At Atlantis, we consider each client a valuable part of our exclusive clientele. Join us and experience premium service that exceeds expectations.

"We build an 400 sqft addition to our living room and made some change to the layout of our home as well , In summary, working with Joel and Avi was a great experience all around. The communication was excellent, the job was done quickly and cleanly, and the end result is absolutely fantastic. I would highly recommend them to anyone in need of home renovation and construction work."

Eric S on July 2023

Avatar for Hagenbach Construction

Hagenbach Construction

2668 Cinnabar Hills Ct
4.75(
16
)
•Approved Pro

Hagenbach Construction

2668 Cinnabar Hills Ct
4.75(
16
)
•Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
17 local quotes requested

Hagenbach Construction is a locally owned and operated company with over 40 years in business with experience in new home construction, room additions, ADU units and Casitas, kitchen and bathroom remodels and all aspects of home remodeling. Let us show you our stress-free, reliable and professional touch for any of your home needs. We're committed to excellence in customer service and professional quality workmanship. Call today to see what expertise can do for the overall value of your project.

"The finished product is nothing short of stunning. They have some incredibly talented craftsmen, and everyone that's been by so far is absolutely speechless! We plan to have them back for future projects. Remodeling is stressful and John & Amy worked diligently to address all concerns in a timely manner. We are very happy with the addition to our home."

Shayna S on August 2023

Hagenbach Construction is a locally owned and operated company with over 40 years in business with experience in new home construction, room additions, ADU units and Casitas, kitchen and bathroom remodels and all aspects of home remodeling. Let us show you our stress-free, reliable and professional touch for any of your home needs. We're committed to excellence in customer service and professional quality workmanship. Call today to see what expertise can do for the overall value of your project.

"The finished product is nothing short of stunning. They have some incredibly talented craftsmen, and everyone that's been by so far is absolutely speechless! We plan to have them back for future projects. Remodeling is stressful and John & Amy worked diligently to address all concerns in a timely manner. We are very happy with the addition to our home."

Shayna S on August 2023

AM GENERAL CONTRACTOR

2341 W Ave #133
5.00(
2
)
•Approved Pro

AM GENERAL CONTRACTOR

2341 W Ave #133
5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 2020

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 2020

Avatar for Froyd and Associates, Inc.

Froyd and Associates, Inc.

373 Grapevine Place
5.00(
3
)
•Approved Pro

Froyd and Associates, Inc.

373 Grapevine Place
5.00(
3
)
•Approved Pro
Customers say: Quick response
12 local quotes requested
3 years of experience

Froyd and Associates s a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I hired Anthony to do a complete remodel of my interior of my home. We knocked out walls redone all the lighting and cabinetry. He completely floored us with the results. We couldn’t be happier. Did exactly what he said he was going to do and in the time frame he promised! I’m using him on my next project my guest bathroom remodel. He’s honest and came in on budget. Good job to him and his team."

Dan B on August 2025

Froyd and Associates s a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I hired Anthony to do a complete remodel of my interior of my home. We knocked out walls redone all the lighting and cabinetry. He completely floored us with the results. We couldn’t be happier. Did exactly what he said he was going to do and in the time frame he promised! I’m using him on my next project my guest bathroom remodel. He’s honest and came in on budget. Good job to him and his team."

Dan B on August 2025

Avatar for BE HOME REMODELING INC

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
•Approved Pro

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
•Approved Pro
Customers say: Quick response
459 local quotes requested
1 years of experience

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025

Avatar for S and L Remodeling and Design, Inc.

S and L Remodeling and Design, Inc.

1270 Springbrook Rd
4.94(
27
)
•Approved Pro

S and L Remodeling and Design, Inc.

1270 Springbrook Rd
4.94(
27
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
10 years of experience

At S and L Remodeling and Design, Inc., we understand that home remodeling is more than a project, it`s a shared vision brought to life between our client and our company. That`s why we work hand-in-hand with homeowners throughout the entire renovation process- from design to completion. If your bathroom needs updating or your kitchen needs a makeover, our experienced team meticulously implements our unique approach to ensure that the finished work suits your needs, your lifestyle and your budget. For many years, our deep-rooted commitment to architectural excellence is what has made us a trusted name among builders, consumers, and even among our competitors. Our dedicated technical and design staff is available to answer questions and offer support throughout the building process. S & L Remodeling and Design, Inc. professionals can create the perfect custom home design to suit your dreams

"It was a pleasure to work with Tomer and Roberto on this project. Outcome is great and things generally went as planned, and they are generally very accommodating and flexible with planning things and changes. Only thing to consider next time would be how long the project would take and put some boundaries on that, this took a bit over two months and was a bit over what I anticipated."

Ali Z on April 2024

At S and L Remodeling and Design, Inc., we understand that home remodeling is more than a project, it`s a shared vision brought to life between our client and our company. That`s why we work hand-in-hand with homeowners throughout the entire renovation process- from design to completion. If your bathroom needs updating or your kitchen needs a makeover, our experienced team meticulously implements our unique approach to ensure that the finished work suits your needs, your lifestyle and your budget. For many years, our deep-rooted commitment to architectural excellence is what has made us a trusted name among builders, consumers, and even among our competitors. Our dedicated technical and design staff is available to answer questions and offer support throughout the building process. S & L Remodeling and Design, Inc. professionals can create the perfect custom home design to suit your dreams

"It was a pleasure to work with Tomer and Roberto on this project. Outcome is great and things generally went as planned, and they are generally very accommodating and flexible with planning things and changes. Only thing to consider next time would be how long the project would take and put some boundaries on that, this took a bit over two months and was a bit over what I anticipated."

Ali Z on April 2024

Avatar for Greg Van Wagoner Construction, Inc.

Greg Van Wagoner Construction, Inc.

249 Junipero Street
4.67(
15
)
•Approved Pro

Greg Van Wagoner Construction, Inc.

249 Junipero Street
4.67(
15
)
•Approved Pro
Customers say: Quality work
29 years of experience
Free onsite estimate

GVC construction is proud to offer Quality work at affordable rates. All work guaranteed! Please visit our website at www.gvcbuilders.com email gvcco@comcast.net

"He was on time and did professional work"

Jim D on November 2017

GVC construction is proud to offer Quality work at affordable rates. All work guaranteed! Please visit our website at www.gvcbuilders.com email gvcco@comcast.net

"He was on time and did professional work"

Jim D on November 2017

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FAQs for addition to existing structure building service projects in Danville, CA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Danville, CA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles
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